@@ -3,18 +3,18 @@
3-----------------------------------------------------------------------------
3-----------------------------------------------------------------------------
5-- Module : Text.XML.Lens
5-- Module : Text.XML.Lens
6−-- Copyright : (C) 2013 Fumiaki Kinoshita
6+-- Copyright : (C) 2015 Fumiaki Kinoshita
7-- License : BSD-style (see the file LICENSE)
7-- License : BSD-style (see the file LICENSE)
9-- Maintainer : Fumiaki Kinoshita <fumiexcel@gmail.com>
9-- Maintainer : Fumiaki Kinoshita <fumiexcel@gmail.com>
10−-- Stability : experimental
10+-- Stability : provisional
11-- Portability : non-portable
11-- Portability : non-portable
12−-- Useful traversals inspired by XPath
12+--
13----------------------------------------------------------------------------
13----------------------------------------------------------------------------
14module Text.XML.Lens (
14module Text.XML.Lens (
15 -- * Lenses, traversals for 'Element'
15 -- * Lenses, traversals for 'Element'
16 Element(..)
16 Element(..)
18 -- ** Names
18 -- ** Names
20 , localName
20 , localName
@@ -24,6 +24,8 @@ module Text.XML.Lens (
24 -- ** Attributes
24 -- ** Attributes
25 , attributeIs
25 , attributeIs
26 , attributeSatisfies
26 , attributeSatisfies
27+ , attributeSatisfies'
28 , attribute
30 , attribute
@@ -31,7 +33,6 @@ module Text.XML.Lens (
33 -- ** Children
35 -- ** Children
36 -- * Prisms for 'Node'
37 -- * Prisms for 'Node'
37 , Node(..)
38 , Node(..)
@@ -54,48 +55,53 @@ module Text.XML.Lens (
54 , Instruction(..)
55 , Instruction(..)
55 , _instructionTarget
56 , _instructionTarget
56 , _instructionData
57 , _instructionData
58− , module Control.Lens
60import Text.XML
59import Text.XML
61import Control.Lens
60import Control.Lens
62import Data.Text (Text)
61import Data.Text (Text)
63import Data.Map (Map)
62import Data.Map (Map)
64−import Control.Applicative
63+import qualified Data.CaseInsensitive as CI
65−
64+import Data.Maybe (isNothing)
68prologue :: Lens' Document Prologue
66prologue :: Lens' Document Prologue
69prologue f doc = fmap (\p -> doc { documentPrologue = p} ) $ f $ documentPrologue doc
67prologue f doc = fmap (\p -> doc { documentPrologue = p} ) $ f $ documentPrologue doc
68+{-# INLINE prologue #-}
71-- | The root element of the document.
70-- | The root element of the document.
72root :: Lens' Document Element
71root :: Lens' Document Element
73root f doc = fmap (\p -> doc { documentRoot = p} ) $ f $ documentRoot doc
72root f doc = fmap (\p -> doc { documentRoot = p} ) $ f $ documentRoot doc
75epilogue :: Lens' Document [Miscellaneous]
75epilogue :: Lens' Document [Miscellaneous]
76epilogue f doc = fmap (\p -> doc { documentEpilogue = p} ) $ f $ documentEpilogue doc
76epilogue f doc = fmap (\p -> doc { documentEpilogue = p} ) $ f $ documentEpilogue doc
77+{-# INLINE epilogue #-}
78doctype :: Lens' Prologue (Maybe Doctype)
79doctype :: Lens' Prologue (Maybe Doctype)
79doctype f doc = fmap (\p -> doc { prologueDoctype = p} ) $ f $ prologueDoctype doc
80doctype f doc = fmap (\p -> doc { prologueDoctype = p} ) $ f $ prologueDoctype doc
81+{-# INLINE doctype #-}
81class AsInstruction t where
83class AsInstruction t where
82 _Instruction :: Prism' t Instruction
84 _Instruction :: Prism' t Instruction
84_instructionTarget :: Lens' Instruction Text
86_instructionTarget :: Lens' Instruction Text
85_instructionTarget f (Instruction t d) = f t <&> \t' -> Instruction t' d
87_instructionTarget f (Instruction t d) = f t <&> \t' -> Instruction t' d
88+{-# INLINE _instructionTarget #-}
87_instructionData :: Lens' Instruction Text
90_instructionData :: Lens' Instruction Text
88_instructionData f (Instruction t d) = f d <&> \d' -> Instruction t d'
91_instructionData f (Instruction t d) = f d <&> \d' -> Instruction t d'
92+{-# INLINE _instructionData #-}
90instance AsInstruction Node where
94instance AsInstruction Node where
91 _Instruction = prism' NodeInstruction $ \s -> case s of
95 _Instruction = prism' NodeInstruction $ \s -> case s of
92 NodeInstruction e -> Just e
96 NodeInstruction e -> Just e
93 _ -> Nothing
97 _ -> Nothing
98+ {-# INLINE _Instruction #-}
95instance AsInstruction Miscellaneous where
100instance AsInstruction Miscellaneous where
96 _Instruction = prism' MiscInstruction $ \s -> case s of
101 _Instruction = prism' MiscInstruction $ \s -> case s of
97 MiscInstruction e -> Just e
102 MiscInstruction e -> Just e
98 _ -> Nothing
103 _ -> Nothing
104+ {-# INLINE _Instruction #-}
100class AsComment t where
106class AsComment t where
101 _Comment :: Prism' t Text
107 _Comment :: Prism' t Text
@@ -104,33 +110,41 @@ instance AsComment Node where
104 _Comment = prism' NodeComment $ \s -> case s of
110 _Comment = prism' NodeComment $ \s -> case s of
105 NodeComment e -> Just e
111 NodeComment e -> Just e
106 _ -> Nothing
112 _ -> Nothing
113+ {-# INLINE _Comment #-}
108instance AsComment Miscellaneous where
115instance AsComment Miscellaneous where
109 _Comment = prism' MiscComment $ \s -> case s of
116 _Comment = prism' MiscComment $ \s -> case s of
110 MiscComment e -> Just e
117 MiscComment e -> Just e
111 _ -> Nothing
118 _ -> Nothing
119+ {-# INLINE _Comment #-}
113_nameLocalName :: Lens' Name Text
121_nameLocalName :: Lens' Name Text
114_nameLocalName f n = f (nameLocalName n) <&> \x -> n { nameLocalName = x }
122_nameLocalName f n = f (nameLocalName n) <&> \x -> n { nameLocalName = x }
123+{-# INLINE _nameLocalName #-}
116_nameNamespace :: Lens' Name (Maybe Text)
125_nameNamespace :: Lens' Name (Maybe Text)
117_nameNamespace f n = f (nameNamespace n) <&> \x -> n { nameNamespace = x }
126_nameNamespace f n = f (nameNamespace n) <&> \x -> n { nameNamespace = x }
127+{-# INLINE _nameNamespace #-}
119_namePrefix :: Lens' Name (Maybe Text)
129_namePrefix :: Lens' Name (Maybe Text)
120_namePrefix f n = f (namePrefix n) <&> \x -> n { namePrefix = x }
130_namePrefix f n = f (namePrefix n) <&> \x -> n { namePrefix = x }
131+{-# INLINE _namePrefix #-}
122_Element :: Prism' Node Element
133_Element :: Prism' Node Element
123_Element = prism' NodeElement $ \s -> case s of
134_Element = prism' NodeElement $ \s -> case s of
124 NodeElement e -> Just e
135 NodeElement e -> Just e
125 _ -> Nothing
136 _ -> Nothing
137+{-# INLINE _Element #-}
127_Content :: Prism' Node Text
139_Content :: Prism' Node Text
128_Content = prism' NodeContent $ \s -> case s of
140_Content = prism' NodeContent $ \s -> case s of
129 NodeContent e -> Just e
141 NodeContent e -> Just e
130 _ -> Nothing
142 _ -> Nothing
143+{-# INLINE _Content #-}
132name :: Lens' Element Name
145name :: Lens' Element Name
133name f e = f (elementName e) <&> \x -> e { elementName = x }
146name f e = f (elementName e) <&> \x -> e { elementName = x }
135localName :: Lens' Element Text
149localName :: Lens' Element Text
136localName = name . _nameLocalName
150localName = name . _nameLocalName
@@ -138,58 +152,65 @@ localName = name . _nameLocalName
139attrs :: Lens' Element (Map Name Text)
153attrs :: Lens' Element (Map Name Text)
140attrs f e = fmap (\x -> e { elementAttributes = x }) $ f $ elementAttributes e
154attrs f e = fmap (\x -> e { elementAttributes = x }) $ f $ elementAttributes e
142nodes :: Lens' Element [Node]
157nodes :: Lens' Element [Node]
143nodes f e = fmap (\x -> e { elementNodes = x }) $ f $ elementNodes e
158nodes f e = fmap (\x -> e { elementNodes = x }) $ f $ elementNodes e
145attr :: Name -> Traversal' Element Text
161attr :: Name -> Traversal' Element Text
146attr n = attrs . ix n
162attr n = attrs . ix n
148attribute :: Name -> Lens' Element (Maybe Text)
165attribute :: Name -> Lens' Element (Maybe Text)
149attribute n = attrs . at n
166attribute n = attrs . at n
167+{-# INLINE attribute #-}
151−-- | Traverse itself with its all children. Rewriting subnodes of each children will break a traversal law.
152−entire :: Traversal' Element Element
153−entire f e@(Element _ _ ns) = com <$> f e <*> traverse (_Element (entire f)) ns where
154− com (Element n a _) = Element n a
156−-- | Traverse elements which has the specified *local* name.
169+-- | Traverse elements which has the specified *local* name (case-insensitive).
157−named :: Text -> Traversal' Element Element
170+named :: CI.CI Text -> Traversal' Element Element
158named n f s
171named n f s
159− | nameLocalName (elementName s) == n = f s
172+ | CI.mk (nameLocalName (elementName s)) == n = f s
160 | otherwise = pure s
173 | otherwise = pure s
176+-- | Old name for 'named'
162ell :: Text -> Traversal' Element Element
177ell :: Text -> Traversal' Element Element
163−ell = named
178+ell n = named $ CI.mk n
165-- | Traverse elements which has the specified name.
180-- | Traverse elements which has the specified name.
166el :: Name -> Traversal' Element Element
181el :: Name -> Traversal' Element Element
168 | elementName s == n = f s
183 | elementName s == n = f s
169 | otherwise = pure s
184 | otherwise = pure s
185+{-# DEPRECATED el "Use named instead" #-}
171attributeSatisfies :: Name -> (Text -> Bool) -> Traversal' Element Element
187attributeSatisfies :: Name -> (Text -> Bool) -> Traversal' Element Element
172−attributeSatisfies n p = filtered (maybe False p . preview (attrs . ix n))
188+attributeSatisfies n p = attributeSatisfies' n (maybe False p)
189+{-# INLINE attributeSatisfies #-}
191+attributeSatisfies' :: Name -> (Maybe Text -> Bool) -> Traversal' Element Element
192+attributeSatisfies' n p = filtered (p . preview (attrs . ix n))
193+{-# INLINE attributeSatisfies' #-}
195+withoutAttribute :: Name -> Traversal' Element Element
196+withoutAttribute n = attributeSatisfies' n isNothing
197+{-# INLINE withoutAttribute #-}
174attributeIs :: Name -> Text -> Traversal' Element Element
199attributeIs :: Name -> Text -> Traversal' Element Element
175attributeIs n v = attributeSatisfies n (==v)
200attributeIs n v = attributeSatisfies n (==v)
201+{-# INLINE attributeIs #-}
177-- | Traverse all contents of the element.
203-- | Traverse all contents of the element.
178text :: Traversal' Element Text
204text :: Traversal' Element Text
179text = nodes . traverse . _Content
205text = nodes . traverse . _Content
181-- | Traverse all comments of the element.
208-- | Traverse all comments of the element.
182comment :: Traversal' Element Text
209comment :: Traversal' Element Text
183comment = nodes . traverse . _Comment
210comment = nodes . traverse . _Comment
211+{-# INLINE comment #-}
213+-- | 'plate' traverses over its sub-elements.
185instance Plated Element where
214instance Plated Element where
186 plate = nodes . traverse . _Element
215 plate = nodes . traverse . _Element
188−-- | Combine two 'Traversal's just like XPath's slash.
191−-- l ./ m ≡ l . 'plate' . m
193−(./) :: Plated a => Traversal s t a a -> Traversal a a u v -> Traversal s t u v
194−l ./ m = l . plate . m
195−{-# INLINE (./) #-}
216+ {-# INLINE plate #-}